docs: def writeInfo(self, location=None, masters=None):
          """ Write font into the current instance.
              Note: the masters attribute is ignored at the moment.
          """
          if self.currentInstance is None:
              return
          infoElement = ET.Element("info")
          if location is not None:
              locationElement = self._makeLocationElement(location)
              infoElement.append(locationElement)
          self.currentInstance.append(infoElement)